I know this isn't a direct answer, but it does fall into the "working with only the DM8 or DM10 modules" category. My previous kit, which I still have, was a Roland TD-6 kit. When I got my Pro-X Hi Hat right before Christmas, my DM10 kit was at our band's practice space for a few weeks while I was doing some session work.
I wanted to try it out, so, not expecting much, I connected it to my TD-6, and it worked pretty much right out of the box. To be honest, because I haven't gotten the settings completely dialed in yet on my DM10, it worked a bit better on the Roland kit than my DM10.
Just thought I'd throw that in, in case it helps at all!